Chemotherapy-Induced Cardiomyopathy: A Focus on the Utility of Statins

Chemotherapy-induced cardiomyopathy (CICM) is a critical adverse consequence associated with chemotherapeutic treatments such as anthracyclines, taxanes, and alkylating agents. Cardiac dysfunction, characterized by left ventricular systolic dysfunction, is the primary effect found in these patients. This may result in heart failure, with heart failure related to chemotherapy resulting in a 3.5-fold increased risk of mortality compared with idiopathic cardiomyopathy alone. Multiple factors, including oxidative stress, inflammation, and disruption of key cellular pathways, are involved in cardiomyocyte damage and influence CICM pathophysiology. So far, dexrazoxane is the sole FDA-approved preventive therapy, but alternative interventions, such as beta-blockers, angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers, and statins, have been studied for their cardioprotective potential. Statins, beyond their cholesterol-lowering capabilities, stand out for their pleiotropic effects, including antioxidant, anti-inflammatory, and endothelial-protective actions, which counteract inflammatory effects. Multiple studies and meta-analyses suggest that statin therapy may decrease both the incidence and severity of chemotherapy-related cardiotoxicity (CTX), as evidenced by smaller declines in left ventricular ejection fraction and lower rates of heart failure in statin-treated patients. However, not all investigations confirm these protective benefits; for instance, some trials, including SPARE-HF, reported no significant differences in cardiac outcomes. While these conflicting findings underscore the need for larger randomized trials, they also reflect the heterogeneity of cancer types, chemotherapy regimens, and patient profiles. Statins show promise as a cardioprotective strategy for individuals at risk of CICM. Enhancing patient selection and specifying the timing and duration of statin therapy are essential steps for incorporating these agents into standard care. Optimizing these parameters may reduce chemotherapy-related cardiac damage, improve long-term cardiac function, and enhance overall survival in cancer survivors.